CaddyWebServer : Improper Control of Generation of Code (Code Injection) Vulnerability - CVE-2026-77281

Caddy is an extensible server platform that uses TLS by default. In version 2.11.3 and earlier three configuration-dependent weaknesses affect the handler and placeholder layer. In modules/caddyhttp/rewrite/rewrite.go Rewrite.Rewrite() can pass attacker-controlled replacement bytes through buildQueryString for a second placeholder expansion when a rewrite URI ends with a literal question mark allowing injected environment or request-variable placeholders to disclose data and when the file pr